RESTRUCTURING CHARGES AND IMPAIRMENT LOSSES (LIABILITY CLASSIFICATION TABLE) (DETAILS) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Restructuring Cost and Reserve [Line Items]
Reduction in force	$ 3,336us-gaap_SeveranceCosts1	$ 4,137us-gaap_SeveranceCosts1	$ 22,632us-gaap_SeveranceCosts1
Facility exit charges	14us-gaap_BusinessExitCosts1	298us-gaap_BusinessExitCosts1	243us-gaap_BusinessExitCosts1
Customer Management Services [Member]
Restructuring Cost and Reserve [Line Items]
Reduction in force	2,182	3,832	22,371
Facility exit charges	14	298	243
Customer Growth Services [Member]
Restructuring Cost and Reserve [Line Items]
Reduction in force	56	43	201
Facility exit charges	0	0	0
Customer Technology Services [Member]
Restructuring Cost and Reserve [Line Items]
Reduction in force	709	73	60
Facility exit charges	0	0	0
Customer Strategy Services [Member]
Restructuring Cost and Reserve [Line Items]
Reduction in force	389	189	0
Facility exit charges	$ 0	$ 0	$ 0

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Includes, but is not limited to, one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, and relocating employees, and termination benefits associated with an ongoing benefit arrangement. Excludes expenses associated with special or contractual termination benefits, a discontinued operation or an asset retirement obligation.

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Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

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